Optics Question 693
Question: When light rays from the sun fall on a convex lens along a direction parallel to its axis
[MP PMT 2004]
Options:
A) Focal length for all colours is the same
B) Focal length for violet colour is the shortest
C) Focal length for yellow colour is the longest
D) Focal length for red colour is the shortest
Show Answer
Answer:
Correct Answer: B
Solution:
Focal length for voilet colour is minimum
